Photographic-printing machine.



'No. 856,716. PATENTED JUNE 11, 1907.

H. H. MQINTIRE. PHOTOGRAPHIU PRINTING MACHINE.

APPLICATION FILED JULY 6, 1906.

I a SHEETS-SHEET 1.

PATENTED JUNE 11, 1907.

H. H. MOINTIRB.

PHOTOGRAPHIG PRINTING MAGHINE.' uruonmn rum) JULY 6, 1905.

3 SHBETSr-SHEET 2.

PATENTED JUNE 11, 1907.

H. H. MGINTIRE. PHOTOGRAPHIG PRINTING MACHINE. urmoxnon FILED JULYG, 1905.

3 SHEETS-SHEET 3.

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HEhV EY H. MGINTlRE, OF SOUTH BEND, lNDIANA.

PHOTQGRAPHEQ PRENTENG WlAQr-HNE.

To call whom, it may concern.-

Be it known that I, HERVEY .H. Moln'rlnn, a citizen of the United States, residing at South Bend, in the county of St. Joseph and State of Indiana, have invented new and useful Improvements in.Pliotographic-Printing- Macliines, of which the following is a specific ation Y This invention relates to photographic printing machines and has for its object to provide a machine of this character that will print a number of photographs lronii'thc same negative and maintain. a uniform exposure for each picture.

The details of construction, merits and advantages of my invention will be better understood by reference to the following description and to the accompanyingdrawings, in which:

Figure lis a front elevation of-fthe machine with the platen raised and with part of the front of the case broken away to expose, the interior mechanism, some of which are shown in section. Fig. 2 is'an end elevation with the end of the case removed to expose the interior mechanism and showing indotted lines the positions that'the parts assume at dillerent steps in the operation of the machine. Fig. 3 is a front elevation of the timing device. Fig. 4 is a plan "view of Fig. 3. Fig. a detail plan view of the tilting frame that carries the electro-magnets showing in dotted lines one position of the parts in the operation of the machine.

Making renewed reference to the drawings, 1 designates a suitable case or cabinet which incloses the incai'idescent electric lamps 2 by which light is emitted to a negative 3 which maybe positioned on a ground glass 4 that covers the opening 5 in the top of the case, the lamps being preferably mounted upon a shelf (3. To the top of the case and at the rear of the latter is'hinged a platen frame 7 that carries a platen 8 which, when lowered, as by catching hold of the handle 9 at the front thereof, presses the photographic paper into intimate contact with the ne ative 3.-

lhe electric lamps in the case are adapted to be automatically lighted and extinguished by the movement of the platen, the former aetion'occurring upon the lowering of the platen and the extinguisl unent oceurril 1g when the indicator of the timing device has cn gaged with a terminal of an electric circuit.

fipeeificaltion of Letters E'atent.

Application filed July 6,1905. Serial Ra ZGBJSSL Patented June ii, 190?,

The circuit for the electric lamps is shown as constituting a conductor a which leads in from the case at the rear at 10 and then extends from the lamps toa contact terminal support 11 of an electric switch 12. lhe negative side 5 of the lamp lighting circuit tern'iinates at the contact terminal support 13.0f the switch and extends through the top of the case at 10.-

ihe switch 12 consists of two carbon. (5011* tact members is. and to "\llliCll are se cured terminal supporting clamping rings 11 and iii, the contact terminal 142 loosely sliding through an opening in a bracket in supported a stai'idard 1? in the lower end of which is slidably mounted a block 15 on which the terminal contact supporting ring 11 is mounted. Thus when the block 3.8 i lifted, it slides in the standard and carries with it the terminal support 31 and the ten ininal 15 and brings the letter into engagement with. the contact tern'iinal 14. which is also lifted with its terminal support 13 to the position shown in dotted lines in Fig. and when in such position, the circuit is closed. f

The elevating of the contact terminal 15 of the switch is controlled through the movement of the platen which is provided with an extension. 19 that engages with the upper end of the push rod 20, which, at its lower end is pivoted to an arm 21 of a frame The lraine 2-2 is preferably U-shapcd and pivoted at its lower end in a pair of ears 23 that extend upwardly from the bottom oi the case. The

end of the arm 2] straddles a post 24 on' on an end plate 27 and in this plate '27 a )in 28 which projects through one side of the l'r'ame 22 within the path of a bpll crank lever 29. One arm of this bell crank lever is slot-- ted as at 30 and in this slot plays a stud 3i which is secured to the block 18 of the switch so that whenthe extension 19 on the platei'i depresses the rod 20 and tilts the frame 22, the pin 28 will engage the other arm of the bell cranlr'lever 2S) and tilt it in to the position shown in dotted lines in l ig. .2 elevating the first mentioned arm of said lever and lift ing the block 18 and the contact member 15 of the switch into engagement with the con tact member 14 of the switch, thus coniplct- IGQ timing device.

ing the circuit, and lighting the lamps. It will he noted that this action takes place immediately when the platen reaches its lowest positirm. so that the photogrn hic paper is, at that time in the operation, he d into intimate contact with the negative end lightfrom the exterior is excluded.

The electro-nntgnets have a stationary core ?2 secured to the frame 22 upon the side opposite to that through which the pin 28 proiects and to this side of the frame is also secured nstutionury armature 333 which is rece sed to receive the ends of coiled springs 34 which bear against the megnetsand normally hold them with their plate 27 up against the opposite side of the frame, in which position the pin 28'is projected through the opening in the frame. The circuit for the electro-megnet is entirely independent of the electric lighting circuit and consists of ulmttery 35 from which extends the conductor c that terminates at the pointer of the The other side of the circuit is indicated at (l and extends from the battery through the coils oi the electro-megnets and up to a binding post 36 on the indicator scale of the timing device. In order to close this circuit and energize the electromiagnets, the terminals which connect with the pointer and scale respectively of the timing device must be connected and this is eliected by the following mecl'ianism:Extending from the top of the case is a board 37 on which is mounted a motor 258. This motor may he the ordiimry clock mechanism and on the arbor of the minute hand is frictionally nmuntod a: pointer 39, the frictional. engagement being such as to cause the arbor to curry the pointernround when the latter is not retarded by contact with an object. The board 37 also has it scale 40 thereon which is provided at one end with it pair of cars 4] which. are pierced by a threaded rod 42. Mounted on this rod bctweenthe cars is n thumb nut 43; by means of which the rod may be adjusted hack and forth along and in nlinement with the scale 40 so as to bring a contort member 4-4 on the inner end of the rod into any position on the scale, the said contact member heing engaged with the sirelc and located within the path of the end ol' the pointer 35-), which, as it moves forward by the rotation of the arbor oi the clock, will engage the contact member and complete the circuit for the electro-magnets, energizing the hitter and causing them to be attructod toward their armature 33 against the tension of the springs 34; and during such movement they carry with thenrtho plate 27 which withdraws the pin 28 from engagement with theupright arm of the hellcrzink lover 2!) and permits the letter, to fall tor-word to the po ition shown in full lines in Fig. 2 and the lower end ol the lever is thus lmverod to break the electric lighting circuit scenic and also to restore the pointer to its normal position, which is out of engagement with the contact memln'r 44. its normal position as shown in lull lines in Fig. 3 endin dotted lines at the left in Fig. 2, it is engaged with :1 stop pin 39.

ration of the pointer is el'l'ected by a rod 45 which at its lower end is pivoted to the lower arm of the bell-crank lever and at its upper.

end it isbent at on angle toward the pointer 39; and, when the lower end of the lever 29 drops, the bent end of the rod engages with the edge of the recess orrc-entrnnt portion 47 formed in the pointer and pushes the lat: ter back to its normal position against the stop pin. When the bell-crank lever 29 is tilted to the position shown in dotted lines in Fig. 2, the bent end oi the rod 46 disenga ed from ti; pointer and the latter is there ore permitted to be operated by the motor. Thus, the pointer serves as a switch for the electro mugnet circuit. There is at stop pin 39 to limit the movement oi the pointer 39 in one direction.'

In order that access may be gained to the mechanism within the case, the front of the latter is preferably provided withn hinged door 48. l

The operation may he hriefly stated as follows. Vthen the negative and photographic paper have been placed in position over the ground glass 4, the platen is lowered and when the extension it) strikes the end of the rod 20, the frame 22 and lever 29 are tilted to the position shown in dotted lines in Fig.

2 raising the Contact l5 ol" the switch and completing the lighting rirrmit and the light is thrown upon. the negative to print the picture. Simultrnwously with the upward movement of the lower nrm of the bell crank lover, the bent end of the rod 46 is released from engagement with the pointer-.3!) and the letter is thus permitteil to more from thr- This resto When the pointer is in position shown in full lines in Fig. 3 :icrrms the indication on the scale. When, however, the "ioiuii-r ougnigos the contact member 44-, which has been previously adjusted to predetermiuv the exposure, the electromagnetic circuit is completed and the mugnets are om-rgizml rousing then: to be nttrnctrd towurd the uruuiture and withdrnwfrom. the contact 44; thus insuring an accurate timing of the exposure of ouch )lCtUIfU. When the platen is again lifted and the push bar 20 released the springiflfi will force the arm 21 of the "room up and the home will drop rczu'wurdly in such po i ou us to bring the pin 2% upon the opi iosilc with oi tho up right armof the bell crank lever, the pin being beveled upon one side to insure this movement.

Having thus fully described my invention what I claim as new is:

' 1. Ina photographic printing machine, a

case, a lamp in the case, a switch, means for 0' eratingthe switch to light the lamp, an e ectric circuit, a timing device to make and break said circuit, and means in the circuit 'to release the switch operating means to extinguish the light.

' 2. In a photographic printing machine, a

case, a lamp inthc case, a, switch, means for 0 crating the switch to light the lamp, an e ectric circuit, a timing device arranged to make and break the circuit, and an electromagnet in the circuit adapted to release the switch-operating means and extinguish the li ht.

' 3. In a photographic printing machine, a case, a lampin the case, a switch, means for 0 ,erating the switch to .light the lamp, an

e ectric circuit, an electro-magnet in the circuit adapted to release the switch operating means to extinguish the light, and a timing device controlled by. the switch operating means and arranged to make and break the circuit of the electro-magn'ets.

. 4. In a photographic printing machine, a case, alamp in the case, a switch to control the lighting and extinguishing of the lamp,

j a timing device, an electric circuit having its terminals connected with the timing device,

'anelectro-magnet in the circuit adapted to .be energized and de-energized by the timing device, means to operate the switch to light the lamps, said means being operated by the electro-magnets to release the switch and extinguish the lamp, and means connected with the switch operating means to re-set the timing device vand break theeleetric circuit.

5. In a' photographic printing machine, a,

case having a lamp therein, and a switch to control the lighting of the lamp, a platen, means operatedby the platen to actuate the switch and light the lamps, a timing device, an electric circuit having its terminals connected with said timing device, an electromagnet in said circuit, means operated by the-magnet to release the switch operating mechanism and extinguish the lamp, and means operated. by the switch operating .means to re-set the timing device and thereby break thecircuit of the magnets.

6. In a photographic printing apparatus,

a case having'a lamp therein, a switch to make and break the circuit for the lamp, a tilting frame, an electrO-magnet carried by the frame, a switch operating lever movable with the irame'of the clectro-magnets, means for tilting the frame and the switch lever to close the circuit for the lamps, and a timing device having terminals for the olectro-inagnet circuit and adapted to complete said circuit and release the switch operatingicver, substantially as specified.

7. In a photographic printing machine, a case having a lamp therein and a switch for controlling the lighting and extinguishing of the lamp, a platen, a tilting frame, a switch operating lever movable with the frame,

means operated by the platen to tilt the the switch o ierating lever, whereby the latter is moved with the frame to complete the lighting circuit, and means operated by the platen to tilt the frame.

9. In a photographic printing ap aratus, a.

case having a la mp therein, a switc 1 for controlling the ii; hting and extinguishing of the lamp, a frame pivoted in the case, an electromagnet mounted in the frame, a plate secured to the end of the magnet, a pin secured to the plate and projecting through the frame, a bell-crank lever having one arm'engaged by said pin and the other arm connected with the switch to operate the latter, a rod connected with the tilting frame, and

a hinged platen to engage the rod, tilt the.

frame, lift the lever and connect the contacts of the switch, and a timing device adapted to complete the circuit of the electro-magnet and retract the pin from engagement with the'bell-crank lever.

In testimony whereof I aiiix my signature,

in presence of two subscribing witnesses.

.HERVEY HJMCINTIRE, itnesses Gnonen Ourscn,

M. Conn. 

